Etymology

spectrophotometer

Today it means: An instrument used to measure the intensity of electromagnetic radiation at different wavelengths. Full definition →

English photometer ← Ancient Greek μέτρον (métron) ← Proto-Indo-European *meh₁-
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The story

  1. Proto-Indo-European*speḱ-
  2. Proto-Indo-European*spéḱyeti
  3. Proto-Italic*spekjō
  4. Latinspeciō
  5. Latinspectrum
  6. Englishspectrum
  7. Englishspectro-
  8. Proto-Indo-European*bʰeh₂-
  9. Proto-Indo-European*bʰéh₂os
  10. Proto-Hellenic*pʰáwos
  11. Ancient Greekφᾰ́ος (phắos)
  12. Ancient Greekφῶς (phôs)
  13. Ancient Greekφωτο- (phōto-)
  14. Englishphoto-
  15. Proto-Indo-European*med-
  16. Proto-Indo-European*meh₁-
  17. Ancient Greekμέτρον (métron)
  18. Englishphotometer
  19. English todayspectrophotometer

From spectro- + photometer.

Etymology from Wiktionary, CC BY-SA 4.0.